If you have trouble in getting Chocolate Doom to work, feel free to join the Chocolate Doom IRC channel (irc.oftc.net #chocolate-doom) to ask for help. There are several experienced Linux users in this channel who will be able to help out.

problems with Linux's native MIDI output can cause the game to lock up. You can work around this by disabling music output in chocolate-setup. It's possible to get decent MIDI output by installing Timidity.